Device foe fish plates



'N M a 1. 6 e J. TYZIOK 8v J. F. LAWTON.

BOLT AND FASTENING DEVICE FOR FISH PLATES. No. 556,836. Patented Mar.24,1896.

UNITED STATES PATENT EEicE.

JAMES TYZICK AND JAMES FREDERIO LAW TON, OF ST. JOHN, NEXV BRUNSWICK.

BOLT AND FASTENING DEVICE FOR FISH-PLATES.

SPECIFICATION forming part of Letters Patent No. 556,836, dated March24, 1896.

Application filed May 11, 1894. Serial No. 510,946. (N0 model.)

T0 aZZ whom it may concern Be it known that we, JAMES TYZIGK and JAMESFREDERIO LAWTON, subjects of the Queen of Great Britain, residing at St.John, in the county of St. John, Province of New Brunswick, and Dominionof Canada, have invented a new and Improved Bolt and Fastening Devicefor Fish-Plates, &o., of which the following is a full, clear, and exactdescription.

This invention relates generally to a bolt and fastening device forfish-plates 5 but it is equally well adapted for fastenin in otherconstructions, the object of our invention being to provide a cheap,simple and efficient substitute for the ordinary threaded nut, and alsoto dispense with the threaded bolt.

()ur invention consists in certain details of construction and noveltiesof combination,all of which will be fully described, and then pointedout in the claim.

In the drawings forming a part of this specification, Figure 1 isaperspective view of our device as applied to a fish-plate bolt. Fig. 2is a vertical sectional view of the same. Fig. 3 is a detail view of thebolt. Fig. 4; is a detail view of the key or washer, and Fig. 5 showsdifferent forms of the devices for holding the key or washer in place.

Referring to the drawings, A indicates a section of railroad-rail, and Bthe fish-plates thereon. Passing through the rail and plates is a bolt0, having the usual head 0, but at its opposite end the sides of thebolt are cut away, as shown at 0, thus providing an arrow or T-shapedend 0 The bolt is also essentially oval or elliptical incross-section,and the rear faces 0 of the end 0 are inclined, as shown,providing sharp edges 0 the purpose of which will appear farther on.

Upon the bolt G is preferably arranged a metallic retaining-plate D,said plate having an oval or elliptical opening cl to receive the bolt0.

Between the end a of the bolt 0 and the plate D is forced a wedge-shapedkey or washer E, said key or washer having a flange or shoulder e and alongitudinal slot 6', by which latter means the washer is made tostraddle thebolt to the rear of its end 0 and inasmuch as the forwardface of this key or washer is inclined and slides upon the inclinedsurfaces 0 the fish-plates B will be bound securely and also the bolt.The inclined surface of the washer is also formed with regularserrations e", which will engage the sharp edges 0 and hold the key orwasher securely in place upon the bolt.

After the parts have been assembled as above described the portion ofthe plate D projecting beyond the flange or shoulder 6 may be bent downupon said flange or shoulder, thus securely locking said washer E uponthe bolt and preventing its turning or jarring off.

If desired, the plate D may be dispensed with and a retaining-wire F,such as shown in Fig. 5, may be employed, and in this construction aperforation is made in the flange 'e. in which one end of the wire issecured,

while the opposite end of the wire is passed around and secured to theend of the bolt 0, which end, in this instance, will have a groove toreceive the wire.

Either form of retaining device may be used, or, if desired, all of themcan be used at one and the same time.

In operation the bolt 0 is passed through the parts to be secured andthe plate D arranged in place. The key or washer E is then forcedastride the bolt C, and, the inclined faces of the key and bolt endcontacting, the parts will be bound tightly together. The plate D isthen bent to lock the key or washer.

It will thus be seen that we provide an exceedingly cheap, simple andefficient device for securing the fish-plates and bolts, and it willalso be seen that we dispense with the expensive threaded bolt and nutand provide a cheap and safe substitute therefor, and one that can beassembled and removed much easier and quicker than an ordinary nut.

Having thus described our invention, what we claim is-- In combination,a bolt having an arrow or T-shaped end with inclined rear faces andsharp edges as described, a slotted wedgeshaped washer having serrationsupon its inclined face, and a flange at its solid end, and alocking-plate arranged between the washer and fish-plate, substantiallyas set forth.

JAMES TYZICK. JAMES FREDERIO LAWVTON.

\Vitn esses GEBERT B. PUGSLEY, ARTHUR I. TRU'EMAN.

